public FacadeCalculateSystem()
 {
     filework = new FileWork();
     Days = filework.Load();
     if (Days == null)
     {
         Days = new List<DayWeather>();
         filework.Save(Days);
         MessageBox.Show("Файл с погодой отсуцтвовал");
     }
     Calul = new Calculating();
 }